This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
UKNOF, TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
Daily listings are sent to bgp-st...@lists.apnic.net.
For historical data, please see https://thyme.apnic.net.
If you have any comments please contact Philip Smith .
IPv4 Routing Table Report 04:00 +10GMT Sat 04 Nov, 2023
BGP Table (Global) as seen in Japan.
Report Website: https://thyme.apnic.net
Detailed Analysis: https://thyme.apnic.net/current/
Analysis Summary
BGP routing table entries examined: 933958
Prefixes after maximum aggregation (per Origin AS): 355729
Deaggregation factor: 2.63
Unique aggregates announced (without unneeded subnets): 454391
Total ASes present in the Internet Routing Table: 74997
Prefixes per ASN: 12.45
Origin-only ASes present in the Internet Routing Table: 64330
Origin ASes announcing only one prefix: 26473
Transit ASes present in the Internet Routing Table: 10667
Transit-only ASes present in the Internet Routing Table:479
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 55
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 1030
Number of instances of unregistered ASNs: 1032
Number of 32-bit ASNs allocated by the RIRs: 43001
Number of 32-bit ASNs visible in the Routing Table: 35319
Prefixes from 32-bit ASNs in the Routing Table: 177112
Number of bogon 32-bit ASNs visible in the Routing Table:21
Special use prefixes present in the Routing Table:1
Prefixes being announced from unallocated address space:516
Number of addresses announced to Internet: 3050674432
Equivalent to 181 /8s, 213 /16s and 153 /24s
Percentage of available address space announced: 82.4
Percentage of allocated address space announced: 82.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 310611
APNIC Region Analysis Summary
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Prefixes being announced by APNIC Region ASes: 248049
Total APNIC prefixes after maximum aggregation: 71480
APNIC Deaggregation factor:3.47
Prefixes being announced from the APNIC address blocks: 241295
Unique aggregates announced from the APNIC address blocks:98869
APNIC Region origin ASes present in the Internet Routing Table: 13723
APNIC Prefixes per ASN: 17.58
APNIC Region origin ASes announcing only one prefix: 4116
APNIC Region transit ASes present in the Internet Routing Table: 1840
Average APNIC Region AS path length visible:4.4
Max APNIC Region AS path length visible: 32
Number of APNIC region 32-bit ASNs visible in the Routing Table: 9056
Number of APNIC addresses announced to Internet: 772209024
Equivalent to 46 /8s, 6 /16s and 249 /24s
APNIC AS Blocks4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-153913
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
Prefixes being announced by ARIN Region ASes:273561
Total ARIN prefixes after maximum aggregation: 124401
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 277878
Unique aggregates announced from the ARIN address blocks:132392
ARIN Region origin ASes present in the Internet Routing Table:19082
ARIN Prefixes per ASN: